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United States eSIMHow much eSIM data for 30 days in the United States?
✓ Prices checked 22 Oct 2026For 30 days in the United States with normal daily use, TripUtils estimates 12–18 GB. A 20 GB plan is the usual buffer. Not a live price. Maps and messaging still fit normal use. US unlimited-home-plan mental models do not apply to a prepaid travel eSIM — pick a GB cap from the range, then open the provider.
Photo: Ivana Rodriguez / PexelsTravel essentials in the United States
The four things that save the most money or hassle before you go.
eSIM for the United States
Mobile data in the United States from the moment you land, instead of costly roaming. Install before you fly.
See Saily plans →Airport transfer
Pre-book a ride from the airport to your stay – or compare with a taxi or public transport on arrival.
Find a transfer →Tours & tickets
Attractions, tours and activities in the United States – compare prices on more than one site.
Browse Klook →Flight delayed?
3+ hours late or cancelled? Up to €600 per passenger under EU261, depending on distance.
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What to do next
EU roaming does not cover the United States. A 20 GB plan is the usual buffer. Open Saily and pick a live United States plan.
Saily plans for the United States — snapshot
As listed on saily.com on 22 Oct 2026, in US dollars. Prices change; the live price is on Saily.
| Data | Valid | Price (as listed) |
|---|---|---|
| 1 GB | 7 days | US$3.99 |
| 3 GB | 30 days | US$8.99 |
| 5 GB | 30 days | US$13.99 |
| 10 GB | 30 days | US$22.99 |
| 20 GB | 30 days | US$36.99 |
Saily also lists unlimited plans for the United States; the price depends on the number of days.
For 30 days at 12–18 GB (20 GB planning size), the smallest listed plan that fits is 20 GB for 30 days (US$36.99 on 22 Oct 2026).
Roaming in the United States on an Austrian plan: what A1 and Drei charge
The United States is outside EU roam-like-at-home, so the EU data in an Austrian plan does not apply there. Published prices, checked on 22 Oct 2026 (euros incl. VAT):
| Network | Option | Data | Price |
|---|---|---|---|
| A1 | Roaming Pass (Zone 1) | per started GB | €4.90 |
| A1 | A1 Roaming Datenwoche Welt | 1 GB, 7 days | €9.90 |
| Drei | Roaming-Paket Go | 1 GB, 15 days | €5.00 |
| Drei | Roaming-Paket Go Select | 5 GB, 15 days | €10.00 |
| Drei | Roaming-Paket Nordamerika Unlimited | unlimited, 15 days | €35.00 |
For the 20 GB planning size (30 days), A1’s Roaming Pass would bill 20 × €4.90 = €98.00, the A1 Roaming Datenwoche Welt 20 × 1 GB = €198.00 (packages run 7 calendar days, Austrian time, and can be stacked). A1 says the Roaming Pass is switched on automatically for every tariff signed since 24 June 2026, and it blocks roaming data at a default limit of €60, which you can raise yourself. Drei packages last 15 days, so a longer trip needs packages for each period.
Magenta prices depend on the tariff — look them up in Magenta’s roaming finder. Older tariffs without these options can cost more. Sources: A1, Drei, Magenta.
Planning size
| Habits | 30-day range | Planning size |
|---|---|---|
| Normal (maps, messages, social) | 12–18 GB | 20 GB |
| Normal + daily video | 30–45 GB | 50 GB |
Assumptions and sources
Light 0.20 / normal 0.50 / heavy 0.95 GB per day, plus optional extras, plus about 20% buffer. No live retail prices.
Holiday weeks and national-park summers lift stays; nationwide data still follows the GB model, not the state.
These are planning ranges, not live prices.
Common questions
Is 20 GB enough for 30 days in the United States?
Maps and messaging still fit normal use. US unlimited-home-plan mental models do not apply to a prepaid travel eSIM — pick a GB cap from the range, then open the provider. The 12–18 GB estimate plus buffer lands on 20 GB. Hotel Wi‑Fi is not counted. Streaming video on mobile is the usual reason to go larger.
Should I roam in the United States instead?
The USA is outside EU roaming. As of 22 Oct 2026, A1’s Roaming Pass bills €4.90 per started GB there (zone 1) and Drei sells 1 GB for €5, 5 GB for €10 or “Nordamerika Unlimited” (unlimited) for €35, valid 15 days. Compare that with an eSIM quote for the same GB.
Do you show live Saily prices?
No. The plan table on this page is a dated snapshot from saily.com (22 Oct 2026); the live price is always on Saily. The GB figures are TripUtils estimates.